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Finding the Fourth Proportional to 486,818.57, 730,310.89 and 217,044.60

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Solution

The fourth proportional to 486,818.57, 730,310.89 and 217,044.60 is: 325,603.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,818.57 : 730,310.89 = 217,044.60 : x
  2. Step 2: Convert to fraction form
    486,818.57/730,310.89 = 217,044.60/x
  3. Step 3: Cross multiply
    486,818.57x = 730,310.89 × 217,044.60
  4. Step 4: Simplify right side
    486,818.57x = 158,510,034,995.69
  5. Step 5: Solve for x
    x = 158,510,034,995.69/486,818.57
  6. Step 6: Final answer
    x = 325,603.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.